My high speed has blown the q43 twice in the last 3-4 weeks. I was testing for shorts last night on that column wire to see if GI or other high power was getting into the line and noticed that the EOS, when tested, shows continuity whether opened or closed, on all three flippers. None of my other system 11 games do this, they all break continuity when opened as they should. I would assume that something is wrong and that the high speed's EOS switch when being tested should break continuity when opened, correct? High Speed remember has the old 1 diode coil unlike newer 2 diode flipper coils on newer games. Any thoughts?

I ran continuity all over both switches for both coils and I am not getting any continuity, as that was my first thought as well, that's when I noticed that continuity being constant with the EOS open or closed. That's when I tested my 3 other System 11's EOS's and they all "break" when EOS is opened. Ill prob. end up tearing them apart, cleaning them and putting them back together, but I just don't want to blow that q43, as it looks like it was replaced before I got the game and I've changed it 2x now.

I test ohms and get back to you....

Okay, testing the lugs for Ohms while the game was off, i was getting a 1.5 reading with the EOS closed and then when opened it read 76 ohms

The right flipper was ready 25 ohms closed and 76 ohms opened

I was testing the lugs on the EOS not the coil, is that where you wanted the readings?

I just tested the 3rd flipper and that one is reading 79 ohms when closed, then when I open it, it stays at 79 ohms? I cleaned all the contacts. I did notice that the left flipper had a weird "engine reeving/lane change" switch that was extra long and the flipper was a bit loose and I noticed that when the flipper full extended it would/could touch the "engine reeving/lane change" switch which could have been causing my short. I clipped the end off of that switch and tightened the flipper bat so there is no play in that flipper anymore.

MY next question is, does it matter which lug on the coil is used to connected to which lug on the EOS switch. (I know you don't use the high powered side of the coil) but the left and right flippers are connected the same way but the upper flipper is connected opposite, i.e. the lower powered lug to the "long blade" lug and the middle lug connected to the "short blade" lug.

I squeezed the EOS together and it did go down to 0 ohms. I bent it and tried a to adjust it, it looks like its closed but unless I squeeze it still reads 70+ ohms. Must just need replaced.

That's good to know for future reference too. I know not to trust my visual inspection on the EOS switches, but from now on I will always test. Typically its the first thing i swap out when I get a new game so I never have issues, in this case the guy I bought it off of supposedly rebuilt all three flippers , but it looks like he did a crappy job and didn't change all the parts.